KENWOOD KDC-135, KDC-MP3036, KDC-MP336, KDC-MP336AX, KDC-MP4036AX Service Manual

...

New ELECTRIC UNIT (X34-) for 2007 CD RECEIVER

X34-59xx-xx

SERVICE MANUAL

ELECTRIC UNITs for the following 2007 CD receivers which are produced in August and September of 2007 are changed as follows. This service manual is only for the changed new ELECTRIC UNITs.

OLD X34- NEW X34-

DESTI-

NATION

DISPLAY

TYPE

ELECTRIC UNIT X34-46xx-xx X34-59xx-xx

PC BOARD J76-0358-02 J76-0513-02

SERIAL No.

FROM

ORIGINAL

SERVICE MANUAL

K KDC-135 X34-4690-10 X34-5940-10

K KDC-135CR X34-4690-11 X34-5940-11

K KDC-MP2035 X34-4630-10 X34-5920-10

K KDC-MP205 X34-4630-12 X34-5920-12

K KDC-MP235 X34-4630-11 X34-5920-11

K KDC-MP235CR X34-4630-13 X34-5920-13

M KDC-136 X34-4690-21 X34-5940-21

M KDC-MP3036 X34-4630-24 X34-5920-24

M KDC-MP3036AX X34-4630-22 X34-5920-22

M KDC-MP336/S X34-4630-24 X34-5920-24

M KDC-MP336AX X34-4630-23 X34-5920-23

M KDC-MP336AXS X34-4630-23 X34-5920-23

M KDC-MP4036AX X34-4630-21 X34-5920-21

E KDC-237SA/SG X34-4672-78 X34-5932-78

E KDC-237SAY/SGY X34-4672-78 X34-5932-78

E KDC-W237A/G X34-4672-76 X34-5932-76

E KDC-W237AY/GY X34-4672-77 X34-5932-77

E KDC-W3037A/G X34-4672-74 X34-5932-74

E KDC-W3037AY/GY X34-4672-75 X34-5932-75

E KDC-W311A/G X34-4672-74 X34-5932-74

E KDC-W311AY/GY X34-4672-75 X34-5932-75

E KDC-W3537A/G X34-4672-72 X34-5932-72

E KDC-W3537AY/GY X34-4672-73 X34-5932-73

E KDC-W4037 X34-4672-70 X34-5932-70

E KDC-W4037Y X34-4672-71 X34-5932-71

7-SEG LCD

14-SEG VFD

7-SEG LCD

14-SEG VFD

70800001

70804301

70803501

70800001

No production

70900001

No production

70900001

No production

70800001

V0800101

No production

KDC-135/...............

KDC-MP2035/........

KDC-135/...............

KDC-MP3036/........

KDC-237SA/..........

KDC-W237A/.........

KDC-W237AY/.......

KDC-W237A/.........

KDC-W237AY/.......

KDC-W237A/.........

KDC-W237AY/.......

KDC-W237A/.........

KDC-W237AY/.......

KDC-W237A/.........

KDC-W237AY/.......

B.BOOST

VOL

AUD

SET UP

C.S.

KDC-MP235

SCRL

AUTO AME

ATT

SCAN RDM REP F.SEL M.RDM

This product complies with the

DISP

This product uses Lead Free solder.

RoHS directive for the European market.

X34-59xx-xx

ELECTRIC UNIT (X34- )

TUNER FRONT-END

IC1

BU5

IC7

RDS DECODER

IC8

RESET IC

CN3

WIRED REMOTE

ANT.

AM+B

LX-BUS

A8V SW5

IC2 or IC3

SW5

A8V

ROM CORRECTION (NOT USED)

IC9

ANALOG SW

IC10

E2PROMSW5

SYSTEM u-COM

SERVO+B

Q401

A8V A8V

SW CONT

E-VOL

111

Q301

PAN5V

BU5

SW5

A8V

DME1

MUTE

ILLUMI+B

CD MECHA

R11-15

1/2W Rx5

IC6

DSI

Q302

BU5 BU5

POWER IC

Q701-704

PRE-OUT MUTE

MUTE

DC-CN etc

PHONE ACC DET / BU DET P.ON FL PS1-1 / PS1-2 / PS1-3 PS2-1 / PS2-2

BU5

FL+B

BU5

Q705

Q901-903

DC-DET

CN4,J5

PRE-OUT

FRONT/ REAR/SW

PS1-1 / PS1-2 / PS1-3 PS2-1 / PS2-2

BU DET

RST

PHONE

ACC DET

BU DET

FL+B

AM+B

SW5

A8V

SW5

BU5

SERVO+B

ILLUMI+B

R103

PHONE

Q101

ACC-DET

Q103

BU-DET

Q102

SURGEDET

IC4

POWER SUPPLY IC

CD SERVO

Q8,9

ILLUMI +B

SW14V

BU5

P.ON FL

DC-CN

PHONE

SP-OUT

ACC B.U.

P-ANT P-CON

BLOCK DIAGRAM

X34-59xx-xx

COMPONENTS DESCRIPTION

ELECTRIC UNIT (X34-59xx-xx)

●

Ref. No. Application / Function Operation / Condition / Compatibility

IC1 System µ-COM Controls FM/AM tuner, the changer, CD mechanism, panel, volume and tone.

IC2,3 E-VOL Controls the source, volume and tone.

IC4 Power Supply IC Outputs 5Vx2, 8.1Vx2, 10.2V, P-CON and P-ANT.

IC6 Power IC Ampliﬁ es the front L/R and the rear L/R to 50W or 45W maximum.

IC7 RDS IC RDS decoder.

IC8 Reset IC Lo when detection voltage goes below 3.6V.

IC9 Analog SW Multiplex triple 2-channel analog SW.

Q2 Servo+B AVR When Q3’s base goes Hi, Servo+B AVR outputs 7.5V.

Q3 Control SW for Servo+B ON when the base goes Hi.

Q7 VFD+B SW ON when the base goes Hi.

Q8 VFD+B AVR When Q9’s base goes Hi, Servo+B AVR outputs 10.5V.

Q9 Control SW for VFD+B ON when the base goes Hi.

Q11 14V SW ON when the base goes Hi.

Q12 14V SW ON when the base goes Lo.

Q13 Control SW for IC4 ON when the base goes Hi.

Q14 Control SW for IC4 ON when the base goes Lo.

Q101 ACC DET ON when the base goes Hi during ACC is applied.

Q102 Serge DET When the base goes Hi, surge voltage is detected.

Q103 BU DET ON when the base goes Hi during BU is applied.

Q104,105 Mute Control ON when the base goes Hi.

Q301 Panel 5V SW ON when the base goes Lo.

Q302 DSI ILLUMI SW ON when the base goes Hi.

Q401 IC9 Control SW

Q402 Quick Charge Voltage SW Charges voltage quickly when the base goes Hi.

Q701~704 Pre-out Mute SW When a base of the 4 transistors goes Hi, pre-out is muted.

Q705 Mute Driver for Pre-out ON when the base goes Lo.

Q801

Q901 DC Offset DET ON when the base goes Hi after Q902’s and Q903’s outputs are separated.

Q902,903 DC Offset DET SW ON when the bases go Lo after IC6’s SP-OUTs (DC) are separated.

Electric Discharge Circuit for C805 (SVR)

Switches to AUX when the base goes Hi, and switches to LX-BUS (CD-CH) when the base goes Lo.

ON when the base goes Lo.

X34-59xx-xx

MICROCOMPUTER’S TERMINAL DESCRIPTION

SYSTEM µ-COM: IC1 on X34- (ELECTRIC UNIT)

●

Pin No. Pin Name I/O Application

1 LX DATA M I/O Data to slave unit Pull-down (GND)

2 LX CLK I/O LX-BUS clock 125k~65kHz

3~5 NC - Not used Output L ﬁ xed

6 REMO I Remote control signal input Detects pulse width

7 NC - Not used Output L ﬁ xed

8 BYTE - Memory extended bus width setting Connects to VSS

9 CNVSS - Connects to VSS

10 XCIN - 32.768kHz

11 XCOUT - 32.768kHz

12 RESET

13 XOUT - 10.0MHz

14 VSS -

15 XIN - 10.0MHz

16 VCC1 -

17 NMI I Connects to VCC

18 PANEL DET

19,20 NC - Not used Output L ﬁ xed

21 ROMCOR DET I E2PROM writing request H: Writing

22,23 NC - Not used Output L ﬁ xed

24 PON FL O Key illumination power supply control ON: H, OFF: L

25 NC - Not used Output L ﬁ xed

26 PON PANEL

27,28 NC - Not used Output L ﬁ xed

29 AUD SCL I/O E-VOL clock output

30 AUD SDA I/O E-VOL data input/output

31 VFD SYS DATA O Display data output

32 VFD PAN DATA I Display data input

33 VFD CLK O Display clock output 125kHz

34 VFD BLK O Display data blanking output

35 CD SI O CD mechanism serial output

36 CD SO I CD mechanism serial input

37 BUCK O Serial clock output 1MHz

38 CD LOS SW I CD loading detection

39 PIO0 I

40 CD SRAMSTB O 1M-bit SRAM standby H: SRAM standby

41 EPM I Flash EPM input Connects to VSS

CD LOE LIM SW

- L: Reset

I Panel communication detection H: Panel detached, L: Panel attached

I/O Panel 5V control

Communication request from mechanism DSP

I CD detection (Chucking SW) H: Loading completed, L: No disc

Truth Value

Tab le

ON: L, Momentary power down/Panel detached:

Hi-Z, 11 minutes after ACC OFF: Hi-Z

H: Reset cancelled, L: Reset, Momentary power down

/Panel detached: L, 11 minutes after ACC OFF: L

H: Data request

Processing Operation Description

X34-59xx-xx

MICROCOMPUTER’S TERMINAL DESCRIPTION

Pin No. Pin Name I/O Application

43 PON CD O CD mechanism power supply control H: Power ON

44 CD LOEJ I/O CD motor control

45 CD MOTOR I/O CD motor control

46 VFD CE O VFD control request

48 CD CCE O CD mechanism chip enable

49 NC - Not used

50 CD MRST O CD mechanism µ-com reset H: Normal, L: Reset

51~53 NC - Not used Output L ﬁ xed

54 CD MUTE I CD mute request L: Mute request

55 CD DISC12 SW I 12cm disc detection Pull-up (B.U.)

56 ROTARY CCW I VOL key input Detects pulse width

57 ROTARY CW I VOL key input Detects pulse width

58~61 NC - Not used Output L ﬁ xed

62 VCC2 -

63 NC - Not used Output L ﬁ xed

64 VSS -

65 NC - Not used

66 TUN IFC OUT I Front-end IFC-OUT input H: Station found, L: No station

67 PON EXT GND I/O IC2 external input quick charge control

68 MUTE I/O Mute L: Mute OFF, Hi-Z: Mute ON

69 ANALOG CON O AUX/LX audio switching

70 LX RST O Forced reset to slave unit H: Reset, L: Normal

71 LX CON O Start-up request to slave unit H: Slave unit ON, L: Slave unit OFF

72 LX MUTE I Mute request from slave unit H: Mute ON, L: Mute OFF

73 LX REQ M O Communication request to slave unit

74 NC - Not used

75 LX REQ S I Communication request from slave unit Pull-down (GND)

76 PWIC SVR O SVR discharging circuit

77 PWIC STBY O Power IC standby control Power ON: H, Power OFF: L

78 PWIC MUTE O Power IC mute

79 ACC DET

80 BU DET

81,82 NC - Not used Output L ﬁ xed

83 RDS NOISE I FM noise detection Only for model with RDS

CD DRIVEMUTE

O Motor driver mute output

I ACC power supply detection ACC found: L, No ACC: H

I Detection of momentary power down

Truth Value

Tab le

Processing Operation Description

Refer to the truth value table

L: OFF, Hi-Z: Quick charge, When IC2 is in source select:

Hi-Z, Mute L: L, Momentary power down/Power OFF: L

AUX: H (Switches after 100ms after ﬁ rst-out mute

begins to work), LX/Other source: L

During 500ms after power OFF and momentary

power down: H, Since then: L

STANDBY source/Momentary power down: L,

TEL mute: L

BU found: L, No BU/Momentary power down: H

(Operates after less than 4ms after momentary

power down is detected)

X34-59xx-xx

MICROCOMPUTER’S TERMINAL DESCRIPTION

Pin No. Pin Name I/O Application

84 TUN SMETER I S-meter input

85 TYPE1 I Destination switching

86 TYPE2 I Destination switching

87 PWIC DC DET I DC offset detection

88 LINE MUTE I Line mute detection TEL mute: Below 1V, NAVI mue: Over 2.5V

89 OFFSET DET I Power IC offset detection

90 PS2 2 O Power supply IC control

91 PS2 1 O Power supply IC control

92 PS1 1 O Power supply IC control

93 PS1 2 O Power supply IC control

94 PS1 3 O Power supply IC control

95 NC - Not used Output L ﬁ xed

96 AVSS -

97 REF CON O VREF control Connects to VREF

98 VREF -

99 AVCC -

100 LX DATA S I Data from slave unit Pull-down (GND)

Truth Value

Tab le

Processing Operation Description

Refer to the truth value table

If DC offset is found 20 times in 100ms with condition

of over 1.0V, it will be judged as DC offset detected.

Refer to the truth value table

• Truth value table

CD motor control

CD motor CD loading/eject

Stop L L

Load H L

Eject H H

Brake H Hi-z

Destination switching

TYPE 2

(Pin 86)

2.4V 0V

2.4V 1.2V

2.4V 2.4V

TYPE 1

(Pin 85)

KDC-W3037A/W3037G/

W311A/W311G/W4037

KDC-W3537A/W3537G

KDC-W237A/W237G

Model

Power supply IC (IC4) control

SEL1 (Pin 10)

PS1-2 PS1-3 PS2-1 ILLUMI P-CON P-ANT

L L L OFF OFF OFF

L L H ON OFF OFF

H L H ON ON OFF

H H H ON ON ON

SEL2 (Pin 11)

PS1-1 PS2-2

L L OFF OFF

H L ON OFF

H H ON ON

AUDIO/SW5

X34-59xx-xx

TEST MODE (7-SEG LCD)

Example

■

Key Description of display Description

Disc EJECT times display

■

A symbol “■” in the key column indicates that the key should be pressed and held for 1 second or longer.

How to enter the test mode

■

Procedure Note

Press and hold the [1] key and [3] key and reset.

EJ CXXXXX

Disc EJECT times display. MAX 65535 (times)

While disc EJECT times is displayed, press and hold for

2 seconds or longer to clear disc EJECT times.

All lamps blink when it is detected that the sub-clock resonator is disconnected.

When having started up in the test mode, change the LINE MUTE inhibition time from 10 seconds to 1 second.

When operating in the test mode, even if a DC offset error occurs, detection information is not written in the E2PROM.

Forced disc ejection is prohibited in the test mode.

How to clear the test mode

■

Procedure Note

Reset, momentary power down, ACC OFF, Power OFF, Panel detached. Clearing the test mode

Test mode default condition

■

Description Default values

Source STANDBY

Display Display lights are all turned on.

Volume -10dB (“30” is displayed.)

Bass Boost OFF

CRSC OFF regardless of having/not having the switching function.

AUX ON (Only model equipped with AUX)

System Q NATURAL (FLAT)

Preout Rear

X34-59xx-xx

Special displays when all lights are on in STANDBY source

■

Key Description of display Description

Common

■

All lights ON. All lights ON.

Destination terminal

condition indication

Development ID

condition indication

2 Serial No. display

Power ON time display

■

Disc operation time display

■

Disc EJECT times display

■

Panel open/close

times display

■

ROM correction version

display

AM ROM data transfer

Audio data initialization

Forced Power OFF

information display

CD information display

mode ON/OFF

■

TEST MODE (7-SEG LCD)

TP11

5:00701K

00000000

Pon 0HXX

Po nXXXXX

PLy 0HXX

PL y XXXXX

EJ CXXXXX

PC XXXXX

0123

––––

oooo

InIT

POFF –––

POF F P n L

“TYPE” indicates system µ-com (IC1) destination, and shows

real-time condition of the destination terminal.

Development ID – Version (system µ-com: IC1)

Serial No. is displayed (8 digits)

00~50 is displayed for “XX”. When less than 1 hour,

displayed by displayed by increments of 10 minutes.

00001~10922 is displayed for “XXXXX”. MAX 10922 (hours)

When Power ON time is displayed, press and hold for

2 seconds or longer to clear Power ON time.

00~50 is displayed for “XX”. When less than 1 hour,

displayed by increments of 10 minutes.

00001~10922 is displayed for “XXXXX”. MAX 10922 (hours)

While the disc operation time is displayed, press and hold for

2 seconds or longer to clear the disc operation time.

(Cleared only for displayed media.)

Disc EJECT times display. MAX 65535 (times)

While disc EJECT times is displayed, press and hold for

2 seconds or longer to clear disc EJECT times.

PANEL open/close times display. MAX 65535 (times)

Press the key for more than 2 seconds while the PANEL open/

close count is displayed and PANEL open/close count is cleared.

The number is the ROM correction version number.

When E2PROM is not installed.

When not written in yet.

When data not matched. (due to the difference in versions)

AUDIO setting value is re-set to the test mode default value.

No forced power OFF

Forced power OFF by communication error between system

µ-com and panel.

While the forced power OFF data is displayed, press and

hold for 2 seconds to clear the data.

For the display contents, refer to “CD information display

mode” in the next section.

While in CD information display mode, press and hold for

2 seconds or longer to clear all CD information.

• CD information display mode

Key Description of display Description

I2C communication status

CD mecha-

nism error

log display

CD Load

error

information

display

(forward

rotation)

(reverse

rotation)

CD Ejection

error

information

display

CD time code

error count

data display

(Missing

counts)

CD time code

error count

data display

(count not

updated)

X34-59xx-xx

TEST MODE (7-SEG LCD)

ICOK

ICER

1:X X M – E R

2:X X M – E R

3:X X M – E R

1:X X L D E R

2:X X L D E R

1:XXEJER

2:XXEJER

3:XXEJER

4:XXEJER

LOSE

:XXCDDA

STAY

:XXCDDA

I2C communication OK

I2C communication NG

Mechanism error log 1 (Latest)

XX: Error number. “– –” is displayed in case there is no error.

Mechanism error log 2 (Latest)

XX: Error number. “– –” is displayed in case there is no error.

Mechanism error log 3 (Latest)

XX: Error number. “– –” is displayed in case there is no error.

Load error switch 1